{"version":"1.0","type":"rich","title":"Multiple Line Chart","description":"A multiple line chart displays temperature readings for several cities over a week, using the city as a color grouping. Each line is drawn with D3’s `line` generator, a basis curve, and a 5-pixel stroke, with a color legend built by a custom `colorLegend` function. Data comes from a CSV loaded via `d3.csv`, parsed into dates and numbers, and scales are set with `scaleTime`, `scaleLinear`, and `scaleOrdinal` from D3 v6.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b2721fe779524561822139afab2abef6?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}